Black Mesa is the fan-made reimagining of Valve Software's Half-Life.
Update 1.5 brings together all the improvements to graphics and gameplay across 15 years of development to create the final version of Black Mesa. There has never been a better time to pick up the crowbar and play!
You are Gordon Freeman, a theoretical physicist at the Black Mesa Research Facility. When a routine experiment goes horribly wrong, you must fight your way through an interdimensional alien invasion, and a bloodthirsty military clean-up crew in order to save the science team... and the world!
Frag your friends across 10 iconic maps from the Half-Life universe, including:
Create your own mods, models, and maps with the Black Mesa Source SDK, then share it with the community on the Steam Workshop.
Collect the full set of trading cards, backgrounds, emoticons, and achievements! Featuring Steam Cloud, Steam Workshop, closed captions in multiple languages and full controller support.
You can run Black Mesa on Windows operating systems. Black Mesa is a game developed by Crowbar Collective and it is listed in the category. Black Mesa is licensed as Black Mesa.